Home / 149,145.80-205,825.52-81,167.16

Finding the Fourth Proportional to 149,145.80, 205,825.52 and 81,167.16

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Solution

The fourth proportional to 149,145.80, 205,825.52 and 81,167.16 is: 112,013.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,145.80 : 205,825.52 = 81,167.16 : x
  2. Step 2: Convert to fraction form
    149,145.80/205,825.52 = 81,167.16/x
  3. Step 3: Cross multiply
    149,145.80x = 205,825.52 × 81,167.16
  4. Step 4: Simplify right side
    149,145.80x = 16,706,272,913.92
  5. Step 5: Solve for x
    x = 16,706,272,913.92/149,145.80
  6. Step 6: Final answer
    x = 112,013.03

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.